Summary of Significant Accounting Policies (Details 4) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Sep. 30, 2014	Sep. 30, 2013
Property, Plant and Equipment
Balance on revolver	$ 0
Impairment recognized	$ 0	$ 0
Building and improvements
Property, Plant and Equipment
Estimated economic useful lives	40 years
Machinery and equipment | Minimum
Property, Plant and Equipment
Estimated economic useful lives	5 years
Machinery and equipment | Maximum
Property, Plant and Equipment
Estimated economic useful lives	14 years
Office equipment and computer software | Minimum
Property, Plant and Equipment
Estimated economic useful lives	3 years
Office equipment and computer software | Maximum
Property, Plant and Equipment
Estimated economic useful lives	10 years
Land improvements
Property, Plant and Equipment
Estimated economic useful lives	20 years